Less than three weeks after announcing it is licensing its Mac OS virtualization technology, Mac clone maker and seller Psystar has releases the software that enables practically anyone to run Mac OS Show Leopard on regular Intel-based systems. Psystar's Rebel EFI works on PCs equipped with Intel Core 2 Duo, Core 2 Quad, i7 or Xeon Nehalem processors, and is offered in two flavors- a free, trial version providing limited hardware functionality and a run-time of two hours, and a full-on version costing $50.

To support Rebel EFI's release, Psystar has kicked off the Psystar Labs approval program which lets users that have problems with making a device/component work on their Mac OS X-running system, send in the hardware and have it certified. This will ensure compatibility and expand the range of hardware profiles supported by Rebel EFI.

You can pretty much bet that Psystar's shenanigans aren't slipping under Apple's radar so prepare for a more brutal (court) fight between the two companies.